2085642806 has 64 divisors (see below), whose sum is σ = 3718310400. Its totient is φ = 869777568.

The previous prime is 2085642781. The next prime is 2085642827. The reversal of 2085642806 is 6082465802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6010325 + ... + 6010671.

It is an arithmetic number, because the mean of its divisors is an integer number (58098600).

Almost surely, 2^2085642806 is an apocalyptic number.

2085642806 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2085642806 is a deficient number, since it is larger than the sum of its proper divisors (1632667594).

2085642806 is a wasteful number, since it uses less digits than its factorization.

2085642806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450 (or 404 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 41.

The square root of 2085642806 is about 45668.8384568734. The cubic root of 2085642806 is about 1277.6541518913.

The spelling of 2085642806 in words is "two billion, eighty-five million, six hundred forty-two thousand, eight hundred six".